package com.wl.thread.demo03;

import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * 模拟倒计时
 */
public class TestThreadSleep{
    public static void main(String[] args) {
/*        try {
            tenDown();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }*/

        //获取当前系统时间
        Date startTime = new Date(System.currentTimeMillis());
        for (int i = 0; i < 10; i++) {
            try {
                Thread.sleep(1000);
                System.out.println(new SimpleDateFormat("HH:mm:ss").format(startTime));
                startTime = new Date(System.currentTimeMillis());
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

    public static void tenDown() throws InterruptedException {
        int num = 10;
        while (true){
            Thread.sleep(1000);
            System.out.println(num--);
            if (num < 0){
                break;
            }
        }
    }
}
